Bottom: Mancao safety cannula  with safe, rounded end  is pushed through the ligamentum flavum without risk of dura puncture. 360° needle rotation is achievable.

The patented design of this unique needle set allows for virtual elimination of accidental dura puncture in Epidural procedures. The beveled cutting tip of the outer cannula (with matching stylet) allows for improved puncture quality (vs. deflected point of Tuohy needle). Graduation markings on outer cannula offer an assist in establishing that the needle point is in place in front of the ligamentum flavum. At this point, the inner stylet is retracted and is replaced by the safe, round-ended, Mancao cannula and directed through the ligamentum flavum. By the method of "Loss of Resistance" the epidural space is safely determined, followed by insertion of catheter etc. NOTE: The catheter can be withdrawn safely or pushed forward, and full (360°) rotation of the epidural needle is also possible whereby the epidural catheter can either be placed up or down.